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Patrick Steinhardt fa05d3cde6 session: Don't refuse unprivileged creation of "direct" backend
When starting a compositor that's using the "direct" session backend,
wlroots needs to handle calls to `drmSetMaster()` and `drmDropMaster()`.
As both calls used to require `CAP_SYS_ADMIN`, wlroots thus simply
refused starting in case the process doesn't enjoy evelated privileges.

Permission rules have changed since linux.git commit 45bc3d26c95a (drm:
rework SET_MASTER and DROP_MASTER perm handling, 2020-03-19). As a
result, starting with Linux v5.8, both ioctls will now also succeed if
the process is currently or has been the DRM master. And as the first
process to open render nodes will become the DRM master automatically,
this effectively means that process elevation is not strictly required
in all setups anymore.

So let's drop the `geteuid() != 0` permission check to allow those new
rules to do their magic.
2020-09-04 11:39:25 +02:00
.builds session: Add libseat backend 2020-08-24 11:13:55 +02:00
backend session: Don't refuse unprivileged creation of "direct" backend 2020-09-04 11:39:25 +02:00
contrib build: replace version with soversion 2020-01-24 11:17:03 +01:00
docs backend/drm: add env variable to disable modifiers 2020-01-24 19:43:51 +01:00
examples examples/dmabuf-capture: add extra roundtrip for wl_output listener 2020-08-31 08:43:54 -06:00
include Remove xdg-shell v6 2020-09-03 00:01:10 +02:00
protocol Remove xdg-shell v6 2020-09-03 00:01:10 +02:00
render render: Don't crash on 0 dimensions 2020-08-27 17:39:31 +02:00
tinywl tinywl: Fix wrong anchor point while resizing a window 2020-04-28 21:44:27 +02:00
types Remove xdg-shell v6 2020-09-03 00:01:10 +02:00
util util/region: add wlr_region_scale_xy 2020-06-17 09:10:54 -06:00
xcursor Fix undefined behavior 2020-09-01 11:58:56 +02:00
xwayland xwayland: do not allow apps to change focus after wlroots request 2020-07-30 13:40:36 +02:00
.editorconfig Set .editorconfig ident_size 2019-01-25 11:37:46 +01:00
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CONTRIBUTING.md contributing: add note about events that destroy objects 2020-06-08 10:12:38 -06:00
LICENSE Update LICENSE year (MIT license) 2018-04-12 21:29:59 -04:00
README.md Remove libcap support 2020-04-29 10:39:09 +02:00
meson.build session: Add libseat backend 2020-08-24 11:13:55 +02:00
meson_options.txt session: Add libseat backend 2020-08-24 11:13:55 +02:00
wlroots.syms util: add wlr_output_destroy_safe 2020-02-17 20:52:37 +01:00

README.md

wlroots

Pluggable, composable, unopinionated modules for building a Wayland compositor; or about 50,000 lines of code you were going to write anyway.

  • wlroots provides backends that abstract the underlying display and input hardware, including KMS/DRM, libinput, Wayland, X11, and headless backends, plus any custom backends you choose to write, which can all be created or destroyed at runtime and used in concert with each other.
  • wlroots provides unopinionated, mostly standalone implementations of many Wayland interfaces, both from wayland.xml and various protocol extensions. We also promote the standardization of portable extensions across many compositors.
  • wlroots provides several powerful, standalone, and optional tools that implement components common to many compositors, such as the arrangement of outputs in physical space.
  • wlroots provides an Xwayland abstraction that allows you to have excellent Xwayland support without worrying about writing your own X11 window manager on top of writing your compositor.
  • wlroots provides a renderer abstraction that simple compositors can use to avoid writing GL code directly, but which steps out of the way when your needs demand custom rendering code.

wlroots implements a huge variety of Wayland compositor features and implements them right, so you can focus on the features that make your compositor unique. By using wlroots, you get high performance, excellent hardware compatibility, broad support for many wayland interfaces, and comfortable development tools - or any subset of these features you like, because all of them work independently of one another and freely compose with anything you want to implement yourself.

Check out our wiki to get started with wlroots.

wlroots is developed under the direction of the sway project. A variety of wrapper libraries are available for using it with your favorite programming language.

Building

Install dependencies:

  • meson
  • wayland
  • wayland-protocols
  • EGL
  • GLESv2
  • libdrm
  • GBM
  • libinput
  • xkbcommon
  • udev
  • pixman
  • systemd (optional, for logind support)
  • elogind (optional, for logind support on systems without systemd)

If you choose to enable X11 support:

  • xcb
  • xcb-composite
  • xcb-xfixes
  • xcb-xinput
  • xcb-image
  • xcb-render
  • x11-xcb
  • xcb-errors (optional, for improved error reporting)
  • x11-icccm (optional, for improved Xwayland introspection)

Run these commands:

meson build
ninja -C build

Install like so:

sudo ninja -C build install

Contributing

See CONTRIBUTING.md.